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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb11672c80cdee6e1e4091bd7930ea686c4bc881450a5780ea86428b7b404e47' 
  AND token = 'CV8ntwZiUk9FHm050LRUv24R9qA+wxEe59CN90nEb2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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