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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'faa059da7fc687bfb9e2f8829fe4bba616a517f228d4778903d10a4de57f25eb' 
  AND token = '9oofDNR4PKQb64lxwUMaUe677R3Kpgodm1jb9nK8DFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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