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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fd2ea8c5ae857095cffa0a3e2c7b84c799179ef0036ce126fb95bec61bfbccc' 
  AND token = 'F68EM9rnaNOhZO9uqC2AkrM6NqRJGJ/FzocJE7GEaqc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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