Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06ab53e09a0abc3c3d2d558951c3485e980a38785950cd990856caac8eef1127' 
  AND token = 'PLradR5l2vAbd3WlUal688ye3Xht88aqYTC8oP4+rKI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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