Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '926fa016c93000ab552fa04e88a1cf9aa0e4dc1d7b438d3658841d147969371c' 
  AND token = 'wZ3mEQEM3QgNbscp0eI5chspeQZwtD/WTEAyir3leik=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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