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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1d7d49f5f97b5c9dc9e2f64af765bffacb6c0c0bbfc5dc000ea9d3ca1441803c' 
  AND token = '6058gsbmRzkUuUt3voRbtZKUthfHu52GM0EemI6HEJY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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