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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '776613ff7a43d7531dc326f0ec898c4558cf6863520338e0709ab9e0d25b6d65' 
  AND token = 'ns96ruJJ0yINZI/HWWN7HZ6QaT493Cm1cw9P32YZvo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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