Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b32cd75562c4c49a2d2474980a970996783876a9004f55f0289e34279f5a76c' 
  AND token = '7FgUeuxDtTG/2KGlbkomEYpKovP98zM/YQ6qtGhgeuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}