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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fba77700a2eed02efd4dd3dd6ac2fb23c9cd98c9f6e391f8280a8ccf4f7fe3b7' 
  AND token = 'I13eBitJ0LaiWnxYLn/skFUbIulsnXGwGmHVbyTgg5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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