Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32f64da2f90863bf733603245daf43cee188557315299825617b6fb9b2a847ee' 
  AND token = 'nzXVLbijPr/tBdMM30iriuMgIsMqYjCj9paM3Qc075o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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