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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7c67c8b987c2cddbb93b54501a14672bbed55da41563d30bc8ae1a5ee7e54ee0' 
  AND token = 'obwRVbOxv8YJlDHOJc0l4rV8FC5DzEFSDPhpNYr/r5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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