Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '522a4e4fa755ab5e8d0a073dc2494abe3b98298e026905750815caf7c46d135a' 
  AND token = 'mWVsG0eqfx5ttTDFBmK99tR+KaJpfAHV5CgJaa2U+FQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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