Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0bd208d507e4123f4d7d9e8e460c09606509c39c4b18280389fc6fabec71976' 
  AND token = 'bM9fvcGvd50NwZLaXrRK4340auaEaZve9Fuh6PKEqFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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