Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5cd52590d72e04aef33deda763348dfede4c9e41e7ab37a3e86732bd4c922199' 
  AND token = 'ezPh4jeJfG3SQDNv5GPplxv43p2mHJN/nHPpjt7ql7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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