Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fb69a889811657c21d1b7adcd2c5e83b41c8bcfa55ad09fa147063a44dfccdd' 
  AND token = 'nQOIDoiPI131rtxy/Gmbg0YO9+2J65ptT3spXOKP8YE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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