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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bdfbca1a4f4ade266e00954adc4dcb742f163c2fd8e646ee1ce86bff81446ac' 
  AND token = 'dI5fCF9cf9lHaAfqm+nfIUizqnhNN7Y/fGriR3EbaAw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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