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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5b0fea899b2b682793c82ede9d51d084ca218587ce18404503822a9bcc338326' 
  AND token = 'kmgQW981/EDwHNX95hIRyvMQBCjiJ6aC7CweHD7R9eA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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