Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '48c2e00f52fab94e66d7ffde64cdf226ffb454223dadf86497884cae270326b2' 
  AND token = 'ehc05jNlQyrgz+ea5QulU413rpw5uYJ2TM0vFY+CVAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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