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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45a4907a9b28b97d8457d79f30c26eb93c0442f09bcfb4f820aae525769000b1' 
  AND token = 'CGd2ZH+h2yQTllcUCzYLXJ8xgddB6XrJF4R4Zjckb+U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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