Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85492065c166eb70290c23747d96fa98333193fba6d373d2813166cc7c1988c9' 
  AND token = 'I9VOB5Rd4Sbi4j3bpUml1gUeLsryrCBU8ka8FBEQwgQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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