Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5d9194e8f3e1db03d0c94795726a0dbe538630e4293e4c4d64f57df51f5651e' 
  AND token = 'cM6C08Y043fp+2/1kikdTxvLx946YwsDt0e/4vYCx0Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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