SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41654abd2fe2dcf568d3d06e6d0b79f5e617ec2ebf3de07b332ca569d28ef774' 
  AND token = 'xo36wtuXHIAO18L5yXJqLjJNYm0mLWX8vKagHh+4/6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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