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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e83b3151077b7a02eeb2e5ce8f84a7f93b4e53af19e62c2de57bc9c6996b2880' 
  AND token = '0l44alYPeeCg2pcnhuUT0Le1MkhNtiBsC1CHkguRAiA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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