Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '658e614397a0073c17da5d230f42f509bfa0c9ec42fb2920283fdf3c6e1f418b' 
  AND token = 'Ansn9im2/hWqW9g9HONTl0NqSUnSCr/HxiZGsHgchno=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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