Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1b2b816b80d711a2ad1c66f7bd4c6c9f4626e86d82eba9c84c3c331beb5bb5bb' 
  AND token = 'fnpmtAsyyyZCkDE3aamedzvgjhJ4eH3ZfSBY9JhpoTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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