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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '2373db1d772c13fc0415edf0252b903bca62c6bc950deb32f549c9aefac316ea' 
  AND token = 'Vf4wiyT5C5b0XQUzl3GpHwCJ6tbrkPX6vDioUxwr7o0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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