Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be85a7320efa7920e49b72e40bc40e6543a297992c0c888f84b092fd3d7b6007' 
  AND token = 'I9YqNMBmclY7p48msIrPjCW8ezhM3ijun4M/4iuz+/I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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