Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1c29bbc5097a937c48a40959bfd285a20b59a0bafd4ae34d39f04b9cd28c64f0' 
  AND token = '7VeN4P0v4Afm8tAj4zUjvO3WLVw9CKKTUeVdnyCSnLI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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