Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '107457cab1bf87ab04f12dc60711bf5c024dda850dd58e728e37ab34c36b3d5d' 
  AND token = '0kpBouB4d3ZgFtyvXiLcTGG/LRM42YSRig1nILVFnhs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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