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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '40216ce380985c3bbe4741c79d75da584f82b4e62cb3a8d2797e943875f64bb3' 
  AND token = 'LGkm6WjWlY0KYfyW0R5NK5LL1reSKFNzSonibOC/LIY=' 
  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"
    }
  }
}