Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '128f5edd6c1809f349a477642dfdb8864a0e1dde57c8273fa31bcf86e4bda386' 
  AND token = 'YHtNl4f+izef7mg89vnEqr2mt7JwXY35/Lnuc/FX2Lc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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