Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a1ac85ad0b2147bc855ef7e3f554fa2656686ae2a7fa5e09a49f7be5cb3f5e4' 
  AND token = 'qHRLT62iox2L+MxutJajfClOBbF6ceda0Sj0ySvtNVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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