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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e453412de5d7729a37ba50684ae1cf3df329006243c33d35fb837f7a66346ec7' 
  AND token = 'vBYHTa7yrsUNmbv0xB/9pl9ilNes1WN7g+jIoEtmhYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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