Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6fee2c2e11541f6e60de05713c70da9a615cb6207903784cec3d63c00dbbd987' 
  AND token = 'n7FjasKgVX7kdEZcO9IR4I/mIXanI+PdU60P92YcyBg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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