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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '524aca749e699b33fec38f8f37e8d6d86d97fa8a2566c443370378ba2b7ae188' 
  AND token = 's3u4re++5gZ++nF0OM8EMHcE9iE2b+VrPdEqSWPoJe8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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