Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '996f64d8cc67b1ac37d87a128e8f304030d4b467e6656227d64303cb9c5ebc3c' 
  AND token = '4NhygS+P3gP8bMDkAS8fz2Z1J6/A0edIylvIakih3fk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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