Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '26d45266a6ad47198b33ea0180fe89bf30133508bd62a37b100712ad1d66a607' 
  AND token = 'azA/gzsg5UY3SaGOyM4JQDzsFKsJ1i/7CijX62BYSe4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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