Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b9c58b64808abde124ed72d0acd95f43bb1c1175c68e7175575338c59d74368' 
  AND token = 'wWr1X3z/VEbyPDW7o7XWwjNQMe3ylgL1b1cokmBBKQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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