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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f9e65697bde47d600e1e4df7e5c57d6cd6b0e7066762f4423fc718ab0ac71e8' 
  AND token = 'bEjaAoSUmUtl+l0DWDqgQM61bjMKMngZcmSifT/yioA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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