Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5342fcecbfa3d3b460fd7da2c3f0f77482e7757c3dce20642190d8406ab653ad' 
  AND token = 'M28zRDPQocwmGu5i5FbwSH2LNOUsd6/lmNmQDJ9f3nU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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