Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fef5d27d571c50d5317df515cde507a45b59a3f70ec762914127bbd52505d24a' 
  AND token = '6nHDckyknnoWIm5b7uUYkWdnwIFKDC+TVgbnk5+qsJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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