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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '597faae2674848e0d89f49982eea13a04d72f55777fb6ef44d2fff799f604949' 
  AND token = 'Gklcajbp69tHbcALaZLla4gL3cS5P8BHVG3avWZD414=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}