Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a2beee19c7051b70c4fe1438f9cdcac2787d50b054090a51e283fc02339439f' 
  AND token = 'BxcDNt/+PH+uM+RI185V/faPDdBPZVGF8E6emQMGmdU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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