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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '518afce13661807c9257bedd84ecb4891ffeff95e4835e5e4814dd865321e5ef' 
  AND token = 'q3pL0WALOwJoWBx9BuuyhQr3tYj7m78zXR1u3M+S/TM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}