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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17649e10deee5670164b6c17bf1007744fd16ada5c0541818dc80610b432f5be' 
  AND token = 'lCRn6V66YyBpik4pbeaE9bg6idnuS6DyW4LkRep8sGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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