Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce9ac76d08fd0c9a7ef935af235cfed80681172747a97fda72b4d6274c24ea0b' 
  AND token = 'YazyMyYf/fM0sjw+/A5v0pWwS8tc0oXkMSxAM5ZJRRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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