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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0960a692296a44cb21a98829a4168b6aa307c93f602f1240dc275ee562a82481' 
  AND token = 'H137dPpmqoRMCv3UUvuqMhoomPdvoso2z+/wltzVysY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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