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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b01ba2433084115964d43201c831d0391f356cdca1377e533993086e737d5676' 
  AND token = 'zicZZ2LbWpetrUSOi9+jdC6MjQ8HttwtYPL01mZE4O0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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