SELECT 
  1 
FROM 
  cscart_multi_declock_keys 
WHERE 
  key_id = '3150f85a63e40f31d4746cb1271e93919f0474f9d8a9251261b2671c512d26d8' 
  AND token = '7bZjL4w86c3rbBBBPAIvqjZgXSJHPu+ZLwaWKChmtqo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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