Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d21b75aabe9f7d88a5330b1bac1c0c22fd45dac67e094c6c42b3bd45e5b56a9' 
  AND token = '89iAIOo6iUOASKBIbp3Cs6O7H9PAhhT2i7SvMjuyfks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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