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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '932dfb71d9358c2c772b88dfa7e9e20cc8dc85e7bb0195110cf2b77fbb824240' 
  AND token = 'eUoQ3WWqsv8RsC0QN8TNVrnYBAay4joINroad5YLtkw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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