Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '709300e9a6ea374dda5b45201b2ac47017af5f28f7cc18c654937c04c6d375e8' 
  AND token = '8SbFnLSahxoeF3LaIVRQX4A2s6h0oNjErTdJYWTC5cM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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