Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8bfa0658e8957c0052c38e2c90fdf6f0744e225d534b061a04c77f8f58270a44' 
  AND token = 'tIspzNbnoM638feUZ/tA6C5pSBVM/qcfzHLkYZDyiLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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