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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4a417d2793c030f86a35b98ba0f8ce335e830eecd368355032250cbd4f1e985' 
  AND token = '7BnIJUsRQx3PVpk0knJ0ybrkrocSdogzWRr9Oer1Ahs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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