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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd76971ba57993d4aa09b46e6abab18fa01481e74ae9e65ef50b4c086566a8605' 
  AND token = 'S00XKNmmA4s0DWM9F3nbmN4bprDVx2gKGoq4wZ/76AM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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