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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72a1893f112d6f7aee5ce96d6dd54c6d4dad31db3d4d94765fb05209450f25bb' 
  AND token = 'feoq/40pNE5ekz7aMpxgjTE5+UACM0iw02+i7Iy26lE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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