Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e57278485175caa56ce70a99f8d333d6ef6a98901beb1b6c290437ae06cf793d' 
  AND token = 'afeFK0E1b/P+jRDRCgwbjZgQG/Ka0xgDFLY/slI/F8k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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