Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '378b50798590c016add452d760dbdd08b1803956e44f7b06afd70714d8a9b95a' 
  AND token = 'jv9avg75hBI1xCHOc/BGJ7Zefb0x8V62hpG+aGO0BGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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