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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ba53077f890bafbf5eadddaf4158f8dea500aa760443fcb47c4f5b82613bb56' 
  AND token = '1yBMWdi3v0tqnsZ2urd0b4QS+Rhn71UYYu9mc8UJCLk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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