Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4994390b6e14bb2dcf41225ce9ec2bb65e2e50433e3319eb0e30b550046cf026' 
  AND token = 'EuBXfgHVo25XI5/OAz3UgYQZLz7pPbgRkJp24zbP8b8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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