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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06e7ce907598cdabcabd2e20c5634a84ead9e665a5e290a877d5bef653cc7fb6' 
  AND token = '6COeqt291PPnR0GDT6D1TkZE5ZJBnA5UG4FytACPtMs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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