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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9469eeef66a0e0cb17d20b66fce29a16f2bab81eade1bf7954ec63669f2f6a7d' 
  AND token = 'CnxMZ5z7xy/sh2M7W4GUVk9AZgU4BeM5CB4J8aqcOfo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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