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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '32f03a08e7a7a1f7945a09504e1335967ba08f9783b45c5ccb0ce1d1738573e6' 
  AND token = 'EjEURoU7k13TZakt2MHcqwhcaaY1LfETGZs6/4hr9yQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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