Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33df7f71a0bb13aab6c22cbd7b7e4d70e03b62c0b797b1fdd8e9237d8d402b5f' 
  AND token = 'QIR3JSUqkCGG7air9121D+fa/cSiSmLUHUpXOis//b8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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