Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b007577bcf4fda6c97489f57e6b5f6e61ecc076e62edbc1f822c0a4e6f7271e3' 
  AND token = 'viY49k5G16V/J7YjSxON0WBgx19rFEEAEGn2XnaRAVw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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