Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cace2263a793882a53f231aeebf99d53cd2826c6b8d3bcb119ce93ffcb96b5b4' 
  AND token = 'OQVVJd5gPllvbDEHDcWefNP2F+s/ns2SsOLt/gCfiiM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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